﻿<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="2016020719_1.aspx.cs" Inherits="web5._2016020719_1" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
        用户名<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
        <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" 
            ControlToValidate="TextBox1" ErrorMessage="用户名不能为空" ForeColor="Red"></asp:RequiredFieldValidator>
        <br />
        <asp:Button ID="Button1" runat="server" Text="Button" />
    
    </div>
    </form>
</body>
</html>
